Which species in the reaction below undergoes reduction? H_2O(g) + CO(g) rightar

Question

Which species in the reaction below undergoes reduction? H_2O(g) + CO(g) rightarrow H_2(g) + CO(g) According to the Bohr model for the hydrogen atom, the energy necessary to excite an electron from n = 1 to n = 2 is the energy necessary to excite an electron from n = 2 to n = 3. either equal to or greater than greater than equal to either less than or equal to less than What is the pH of 3.5 times 10^-3 M HCl(aq) 3.50 1.01 2.46 5.65 -1.01 A mixture of H_2 and O_2 is placed in a 5.00 L flask at 22 degree C. The partial pressure of the H_2 is 2.7 atm and the partial pressure of the O_2 is 1.5 atm. What is the mole fraction of _2? 0.64 0.87 0.13 0.56 0.36 The n = shell is the lowest that may contain f-orbitals. 4 6 3 5 2 Excited sodium atoms emit light in the infrared at 589 nm. What is the energy of a single photon with this wavelength? 3.37 times 10^-1^-19 3.37 times 10^-28 J 5.09 times 10^14 1.30 times 10^-19 1.12 times 10^-27 When 66.0 g of an unknown metal at 28 5 degree C is placed in 83 0 g H_2O at 78.5 degree C, the water temperature decreases to 75.9 degree C What is the specific heat capacity of the metal? The specific heat capacity of water is 4.184 J/g-K. 0.055 J/g middot K 2.6 J/g middot K 0.18 J/g middot K d 0.69 J/g middot K 0.29 J/g middot K What is the correct orbital box diagram for the ground state electron configuration of Ni? What is the net ionic equation for the reaction of aqueous sodium hydroxide and aqueous iron(ll) chloride? Which element has the following ground state electron configuration?

Explanation / Answer

(21) (e) H2O is reduce to H2

(22) (e) less than. Because as we moving nucleus to higher energy levels, the energy gap will be decreased.

(23) (c) pH = -Log[H+] = - Log(3.5*10-3) = 2.46

(24) (a)

PH2 = XH2 * Ptotal

2.7 = XH2 * 4.2

XH2 = 0.64

(25) (a) 4

(26) (a) E = h c / wavelength = 6.626*10-34 * 3 * 108 / 589*10-9 = 3.37*10-19 J

(27)

(28) (b) 3d84s2

(29) (a)

(30 (e) C

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